A pallecon is a reusable bulk container lined with an aseptic bag and typically has a capacity of 1000L.
http://www.cobell.co.uk/Cobell---Pallecon

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500ltr Whole Milk Pallecon

500ltr Semi Skimmed Milk Pallecon

500ltr Skimmed Milk Pallecon
500ltr Raw Milk Pallecon
500ltr 1% Milk Pallecon
500ltr Whole Organic Milk Pallecon500ltr Semi Skimmed Organic Milk Pallecon
1000ltr Whole Milk Pallecon
1000ltr Semi Skimmed Milk Pallecon
http://www.freshways.co.uk/manufacturing-products.html

Brambles (ASX: BXB) will acquire Pallecon, a provider of intermediate bulk container solutions in Europe and the Asia-Pacific, for €135 million
https://www.proactiveinvestors.co.uk/companies/news/149742/b...

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Note added at 26 mins (2018-12-22 15:15:27 GMT)
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Sorry, the numbers jumped!


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Note added at 27 mins (2018-12-22 15:16:25 GMT)
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If you don't want to call it a pallecon, you could use 'bulk container'.